How much conditioner do you use when you know that you are sanding that day?

Now, one might brush this off (seewhatididthere?) as a silly question, but let me make it perfectly clear when I say that it's a very important issue. When working in the shop in the Texas heat, you not only need to make sure that you keep your body hydrated; you must also keep those tresses nice and nourished! Sawdust (or sanding dust) can definitely dry out many a surface, that's why I'll slather on half a tub or so of petroleum jelly, just to keep that glorious mane of mine protected.